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January Weather in Roosky, Ireland

Last updated: August 23, 2025

In January, the average temperature in Roosky, Ireland hovers around 6°C (42°F), with nighttime lows dipping to a chilly -4°C (24°F) and daytime highs reaching a mild 14°C (57°F). You'll also want to keep an umbrella handy, as 69 mm (2.7 in) of rain typically falls over 11 days throughout the month. With an average humidity of 88%, be prepared for a damp atmosphere as you explore!

January Temperature in Roosky

In January in Roosky, the average temperature is 6°C (42°F). Maximum temperatures can reach 14°C (57°F), while minimums can drop as low as -4°C (24°F). Be prepared for a mix of chilly days and milder weather during your travels.

January Weather in Roosky: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Roosky, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Roosky, January typically has an average temperature of 6°C (42°F), with highs reaching up to 14°C (57°F) and lows dropping to around -4°C (24°F).
JanFebMarAprMayJunJulAugSepOctNovDec424344485357605956514643
Data source: Temperature data for Roosky generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in Roosky

In Roosky in January, the total precipitation amount is 69 mm (2.7 in) spread across 11 days.

January Precipitation Trends in Roosky

The chart displays monthly precipitation patterns in Roosky, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Roosky, January typically receives around 69 mm (2.7 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec6911293567389831307810095102
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Roosky

In Roosky in January, humidity is 88%. With an average temperature of 6°C (42°F), this humidity feels like a damp chill that seeps into your bones, making traveling uncomfortable as the cold air clings to your skin and saps your energy.

January Average Humidity in Roosky

This chart illustrates the average monthly humidity levels in Roosky, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Roosky is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%87%86%83%83%85%85%88%91%92%89%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Roosky

In Roosky in January, the maximum UV index is 1, which corresponds to a low Exposure Category. This means you have a time to burn of 45 minutes. For more details, you can check the Hourly UV Index in Roosky.

Maximum UV Index Levels in Roosky for January

The chart shows the monthly maximum UV Index (UVI) for Roosky in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In January, the maximum UV index in Roosky typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578875321
Data source: Roosky January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How January Weather in Roosky Compares to Other Months

Weather in Roosky varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Roosky, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Roosky, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (42°F)69 mm (2.7 inches)88%low
February Weather6°C (43°F)112 mm (4.4 inches)88%low
March Weather7°C (44°F)93 mm (3.6 inches)87%moderate
April Weather9°C (48°F)56 mm (2.2 inches)86%moderate
May Weather12°C (53°F)73 mm (2.9 inches)83%high
June Weather14°C (58°F)89 mm (3.5 inches)83%very high
July Weather16°C (60°F)83 mm (3.3 inches)85%very high
August Weather15°C (59°F)130 mm (5.1 inches)85%high
September Weather13°C (56°F)78 mm (3.1 inches)88%moderate
October Weather10°C (51°F)100 mm (3.9 inches)91%moderate
November Weather8°C (46°F)95 mm (3.7 inches)92%low
December Weather6°C (44°F)102 mm (4.0 inches)89%low

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